If we burn too many fossil fuels, we produce more ____ Many animals like polar bears are ____ because of climate change. One way to reduce electricity use is to use ____ from the sun. Plastic in the ocean is a big danger to ____ . We need to protect the ____ to have clean air and water. People throw away too much ____ every day, and that pollutes the Earth. Plants produce ____, which humans and animals need to breathe. Our ____ is in danger because of pollution and deforestation. ____ affects weather patterns and increases natural disasters. We must reduce ____ by recycling and using clean energy. Turning off lights helps save ____ National parks help protect ____ and their natural habitats.

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